Harvester



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(No Model.)

J. MAGPHAIL.

HARVESTER.

Patented May 12,1891.

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(No Mode li) 3 Sheets-Sheet 3. J. MAGPHAIL.

HARVESTER.

No. 451,943. r Patented May 12, 1 891.

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UNITED STATES PATENT OFFICE.

JAMES MACPHAIL, OF ROCKFORD, ILLINOIS.

HARVESTER.

. I SPECIFICATION forming part of Letters Patent No. 451,943, dated May 12, 1891.

Application filed December 6, 1890. Serial No. 373,843. (No model.)

To all whom it may concern.-

Be it known that I, JAMES MAoPHAIL, a citizen of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Harvesters, of which the following is a specification.

My invention relates to mechanism designed to assist in raising the reel-jacks and reels of harvesters; and it consists of certain new and useful features of construction and combinations of parts hereinafter described, and pointed out in the claims.

Referring to the accompanying drawings, which form a part of this specification, Figures l. and 2 are elevations of a portion of a harvester provided with my improvement. Fig. 3 is an isometrioal view of the same. Fig. 4 is an isometric view showing a modified equivalent form of the mechanism illustratedin the foregoing figures.

Like letters of reference indicate corresponding parts throughout the several views.

A represents the frame that supports the seat (not shown) and reeljack of the machine.

B is a reel-jack support of any suitable form and construction rigidly connected with the frame A.

C is a bell-crank provided with a rearwardly-extending arm 0 and pivotally mounted on a stud-journal B by means of a circular bearing 0 therein.

D is a reel-jack mounted on the bell-crank 0, whereby it may be raised and lowered at will within the limits of the mechanism.

I3 is a hook or other suitable means of attaching a spring (to be described) to the frame A or base of the support 13.

E is a spring extending and reacting between the free end of the rearwardly-extending arm 0' of the bell-crank C and the hook 13*, located below and behind the bearing 13 of the bell-crank O on the frame A or base of the support 13, the exact location of the hook or other means of attachment evidently being immaterial.

F is a segment-rack fast to the frame A. F is an adj UStIHg-IGVGI pivoted thereto and capable of connection therewith in the usual manner.

F is a rod connecting the adjusting-lever Slight force applied to the lever F will change the position of the bell crank C and raise the parts supported thereby from the position indicated by the dotted lines X in Fig. 1 to that shown in Fig 2. Obviously, if the lever F be disengaged from the segmentrack F, the weight of the reel-jack and its reel will cause those parts to descend to any desired position.

The sustaining force of the spring E is substantially constant in every position that it can be made to assume, for as the distance 1ncreases between the arm 0 and the hook B the spring loses leverage and gains tension, and as the distance decreases between the arm 0' and the hook B the spring loses tension and gains leverage. In other words, the springgains leverage in the same proportion that it loses reactionary force, and vice versa.

Referring to Fig. 4, G is a bell-crank identical with the bell-crank 0, except that it is not provided with a rearwardly-extending arm corresponding with the arm 0' and mounted in the same manner. G is a spring extending and reacting between the upwardlyextending arm of the bell-crank G and a point of attachment on the reel-jack frame A or a part, as F, located thereon. The modified but equivalent construction shown in Fig. 4. operates equally as well as that shown in the preceding views.

I claim- 1. In combination, the bell-crank provided with a rearwardly-extending arm and pivotally mounted on a suitable bearing, and the spring extending and reacting between the free end of the rearwardly-extendingarm and the base of the bearing to assist in raising the reel-jack and reel mounted on the bell-crank, substantially as and for the purpose setforth.

2. In combination, the reel-jack frame, the bell-crank having arearwardly-extending arm and being pivotally mounted on a suitable support fast thereto, and the spring extending and reacting between the free end of the rearwardly-extending arm of the bell-crank, and a point of attachment on the reel-jack frame below and behind the pivotal bearing of the bell-crank to assist in raising the reeljaek and reel mounted 011 the bell-crank, substantially as and for the purpose specified.

3. In combination, the reel-jack frame, the bell-crank mounted on a support fast thereto, andthespringextendingandreactingbetween the upwardly-extending arm of the bell-crank and a point of attachment on the reel-jack frame or a part located thereon to assist in raising the reel-jack and reel mounted on the bell-crank, substantially as and for the purpose specified.

JAMES MACPl-IAIL.

Witnesses:

L. L. MoRRIsoN, E. F. DoWLINe. 

